Spectrum sensing

a spectral sensor and spectral technology, applied in the field of spectral sensing, can solve the problems of affecting the user experience, affecting the efficiency of spectral sensing, conflicting with the ongoing transmission of the ue, etc., and achieve the effect of improving flexibility and efficiency of use of spectral resources and efficient spectral sensing

Active Publication Date: 2014-09-25
NOKIA TECHNOLOGLES OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]Therefore, there is a need in the art to provide for an efficient way of performing spectrum sensing on a spectrum such that ongoing transmission in a licensed spectrum would not be interrupted and thus user experiences would not be degraded.
[0024]According to certain embodiments of the present invention, because performance of the spectrum sensing is limited only to idle user equipments, transmission interruption caused by the non-idle user equipments performing the spectrum sensing would be eliminated and nonexistent any more. Further, because the base station is enabled to flexibly configure characteristics of the spectrum sensing, the spectrum sensing can be efficiently accomplished. In addition, by means of efficient spectrum sensing, flexibility and efficiency of use of the spectral resources will be ameliorated.

Problems solved by technology

This spectrum sensing behavior might, however, conflict with a UE's ongoing transmission, especially a UE with a single RF chain or a limited number of RF chains.
In a case where the spectrum sensing requires a high accuracy or lasts a relatively long time, such transmission interruption would engender decreased quality of service and degrade user experiences.

Method used

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Embodiment Construction

[0032]Embodiments of the present invention propose an efficient mechanism of spectrum sensing, which generally involves sensing strategy configuring, spectrum sensing, and sensing results reporting procedures. In particular, with respect to a UE with a single RF chain or limited number of RF chains, the BS that is in connection with the UE informs the UE of the sensing strategy, i.e., information regarding pre-configurable characteristics of the spectrum sensing. Due to connection with the BS, the UE now is in a non-idle mode and not allowed to perform the spectrum sensing; otherwise, a potential and unwanted transmission interruption may occur. When the UE disconnects the communication with the BS (e.g., call ended) and enters into an idle mode, it will perform the spectrum sensing with its available RF chain on a spectrum (e.g., a potential licensed or license-exempt spectrum) which may be specified by the above information. After completion of the spectrum sensing, the UE will re...

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PUM

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Abstract

Provided are methods, corresponding apparatuses, and computer program products for performing spectrum sensing on a spectrum. A method comprises receiving, at a user equipment, information regarding performing spectrum sensing from a base station; performing, based upon the information, the spectrum sensing by the user equipment in an idle mode; and transmitting, by the user equipment out of the idle mode, to the base station a result of the spectrum sensing. With the claimed inventions, transmission interruption caused by non-idle user equipments performing the spectrum sensing would be eliminated.

Description

FIELD OF THE INVENTION[0001]Embodiments of the present invention generally relate to wireless communication techniques including the 3GPP (the 3rd Generation Partnership Project) LTE (Long Term Evolution) technique. More particularly, embodiments of the present invention relate to methods, apparatuses, and computer program products for performing spectrum sensing on a spectrum.BACKGROUND OF THE INVENTION[0002]Due to the technical benefit that a local area radio network extends the coverage area of a radio system and facilitates easy access of a user equipment to a core network, LTE radio systems have kept focusing on developments of the local area radio networks (also known as LTE-LANs for short) consisted of for example picocells or femtocells (also known as home-eNB cells) that operate in licensed spectra. To improve use-efficiency of the finite and increasingly crowded spectrum and decrease spectral costs, a few approaches for shared use of the spectrum have been recommended or a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04W24/10H04W16/14
CPCH04W16/14H04W24/10
Inventor LI, HAITAOLEI, HAIPENGSHU, KODO
Owner NOKIA TECHNOLOGLES OY
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